The short answer: the only things you should avoid sharing with someone who has HIV are items that could carry blood, like razors, toothbrushes, and needles. Everyday items like dishes, cups, towels, and food are completely safe to share. HIV does not spread through saliva, sweat, tears, or casual contact of any kind.
Most of what people worry about sharing poses zero risk. Understanding why can help you feel confident in your daily interactions and focus on the very small number of precautions that actually matter.
Items That Are Safe to Share
HIV cannot survive long outside the human body and cannot reproduce on surfaces. It is not present in saliva, sweat, tears, urine, or feces (unless visibly mixed with blood). That rules out transmission from a remarkably long list of everyday interactions.
You can safely share:
- Dishes, cups, and silverware. Drinking from the same glass or eating with the same fork carries no risk.
- Food and drinks. Cooking together, sharing a meal, or drinking from the same bottle is safe.
- Towels, bedding, and clothing. Skin contact with fabric cannot transmit HIV.
- Toilets, showers, and sinks. Sharing a bathroom poses no risk.
- Pools, hot tubs, and drinking fountains. Water does not transmit HIV.
There are no documented cases of HIV being transmitted through spitting, hugging, shaking hands, or closed-mouth kissing. You also cannot get HIV from a mosquito bite or any other insect. The virus simply does not work that way.
Items You Should Not Share
The precautions that genuinely matter all come down to one thing: blood. HIV lives in blood, and anything that might carry even a small amount of someone’s blood into your body through a cut or open sore is worth keeping personal.
- Razors. A razor can nick the skin and retain traces of blood on the blade. Use your own.
- Toothbrushes. Gums bleed easily, especially during brushing. A shared toothbrush could, in rare circumstances, transfer blood.
- Needles, syringes, and injection equipment. This is the highest-risk category. Sharing needles for any purpose, whether for drugs, hormones, steroids, or silicone, can transmit HIV because blood collects inside the syringe. Even secondary equipment like cookers and cotton filters (“works”) can carry blood and should never be shared.
- Nail clippers and cuticle tools. These can draw small amounts of blood, so keeping them personal is a reasonable precaution.
Even with these items, transmission is described by the NIH as “extremely rare.” It would require a visible amount of blood and a direct route into the body, like an open cut or sore. Still, avoiding the share is easy, so there’s no reason not to.
Cleaning Up Blood Safely
If someone with HIV has a cut, nosebleed, or any kind of bleeding, basic precautions keep everyone safe. Wear disposable gloves if you’re helping clean up. Wipe up visible blood with paper towels and throw them away in a sealed bag. Then clean the surface with a diluted bleach solution: about one part household bleach to 100 parts water works on hard, nonporous surfaces once you’ve removed the visible blood first. HIV does not survive long on dry surfaces, so prompt cleanup eliminates any theoretical risk.
What U=U Means for Daily Life
A person with HIV who takes their medication consistently and maintains what’s called an “undetectable” viral load (the amount of virus in their blood drops below 200 copies per milliliter) cannot pass HIV to others during sex. This principle is known as U=U: Undetectable equals Untransmittable. A Harvard professor involved in the research has noted that there has never been a single documented case of someone transmitting HIV while their viral load was below 200.
This doesn’t change the advice about razors and needles, since those involve direct blood-to-blood contact in a different way. But it does mean that for the vast majority of daily interactions, including intimate ones, a person on effective treatment poses no transmission risk at all.
Protecting Someone With HIV From Illness
There’s a flip side to this question that many people don’t think about. If someone with HIV has a weakened immune system (particularly if their CD4 count, a measure of immune strength, is very low), certain foods and exposures you share with them could actually make them sick. This isn’t about HIV transmission. It’s about protecting them from infections their body may struggle to fight off.
Foods to be cautious about sharing or preparing for someone with a compromised immune system:
- Raw or undercooked meat, poultry, eggs, and seafood. Cook poultry to 180°F and other meats to 165°F. Avoid dishes made with raw eggs, like homemade Caesar dressing, cookie batter, or eggnog.
- Unpasteurized dairy and juice. Stick to pasteurized versions.
- Raw sprouts like alfalfa or mung beans, which frequently harbor bacteria.
- Soft cheeses such as brie, feta, camembert, and queso fresco, which can carry listeria.
- Deli meats and prepared salads unless reheated until steaming.
Pet-related precautions also apply. Cats should be kept indoors and their litter cleaned daily (ideally by someone else, or with gloves). Reptiles like snakes, iguanas, and turtles carry salmonella and are best avoided. Young animals under a year old, especially those with diarrhea, are more likely to carry harmful germs. These guidelines come from the VA’s HIV care recommendations and apply most strongly to people whose immune systems are significantly suppressed, not everyone with HIV.
If an Accidental Exposure Happens
In the unlikely event of a genuine blood exposure, such as a needlestick or blood splashing into an open wound, a preventive treatment called PEP (post-exposure prophylaxis) can dramatically reduce the chance of infection. It must be started within 72 hours of exposure, and sooner is better. In clinical studies, only one case of HIV out of over 2,200 people who completed the full 28-day course was attributed to PEP not working. The other infections in those studies were traced to people not finishing the medication, starting it too late, or continuing risky exposures afterward.
PEP is a safety net, not something most people sharing a household will ever need. The everyday precautions are simple: keep blood-contact items personal, clean up spills with gloves and bleach, and treat the person in your life the way you’d treat anyone else.