https://ourbloodinstitute.org/blood-matters/mosquitoes-blood...
The smelliest parts of people are the sweat glands and mouth. I pay extra care to my smell when archery hunting by keeping my teeth brushed and using wet wipes on sweaty areas. Eating an apple also helps neutralize mouth odor.
Mosquitoes have never left any kind of mark or bump or bite on my skin.
I can sometimes feel them biting (injecting? whatever) and I smack/brush them away but that's the most nuisance they cause.
I've always wondered why.
I'm pretty sure as a kid I got a lot more bites. My kid's a teen so I wonder if hormones play a part.
It's a big deal for blood transfusion but that doesn't automatically make it relevant to mosquito preferences, and TFA doesn't mention blood type.
Yes. https://academic.oup.com/jme/article/41/4/796/885285
Hardly conclusive, but there is some reason to suspect it plays a role.