Flies are attracted to humans for several reasons. Besides the smell and protein they find in our sweat and blood, flies also want to feed on dead cells and rotting flesh. They also find humans appealing because they produce waste, which they use to lay eggs. Whether you’re allergic or not, flies can be a real nuisance.
Luckily, flies aren’t as dangerous as we might think. Most flies are not aggressive and won’t bite you. Rather, they’ll suck up the skin secretions on your body. Their favorite food sources include dead skin, sweat, and carbohydrates. Flies are also attracted to carbon dioxide, which they can collect from your breath and mouth.
You can try to avoid attracting flies by avoiding places where there’s garbage or excess food. Clean up these areas regularly and try to keep your home free of rotten food. It’s also a good idea to keep your windows and doors closed, as flies can enter through a tiny crack.
Studies have shown that female black flies are attracted to certain people. They were tested over a two-year period. Some subjects were consistently more attractive than others, while others were less attractive. The results indicate that the difference may be due to differences in the rate of CO2 production in each individual.