I don’t mean to brag, but I’ve very rarely been bit by mosquitoes. It goes without saying that I’m thankful for not being a desirable blood bank to the little pests though I have always wondered why they leave me alone, but not others.

I even found other people in life who seemed to never have a need for mosquito repellent. This is good for us since it means a lower chance of catching a disease carried by mosquitoes. But this still begs the question, why do some people get bitten by mosquitos more than others? It turns out there are four reasons.


#1. How Much Lactic Acid You Produce
Lactic acid leaves your body through your sweat glands and is very attractive to mosquitoes. In a weird twist, mosquitoes prefer older sweat rather than fresh sweat.

#2. Bacteria Levels
Depending on what kind of bacteria you have on your skin and in what amount can vary how appealing you are to mosquitoes. Some bacteria — like Pseudomonas, Delftia, Leptotrichia, and Actinobacteria — make you less appealing to a mosquito. Other bacteria like Staphylococcus and Variovorax make you look more delicious.

#3. What Kind Of Blood Type You Have
Sadly, your blood type has a fair bit to do with how often you will be bitten. If you have type O blood, you’re out of luck. Those with type A blood will be bitten less. Interestingly, 85% of people emit a kind of chemical that alerts other mosquitos to what kind of blood type you have.

#4. How Much Carbon Dioxide You Exhale
Do your best to hold your breath. Mosquitoes are attracted to CO2 levels meaning that heavy-set people and heavy breathers are doing themselves no favors when it comes to avoiding mosquitoes.