Why don't some mosquitoes bite? Pray for the great gods.

Only female mosquitoes bite. When female mosquitoes prick the skin with mouthparts to suck blood, they will inject saliva to prevent blood coagulation, which will make the blood lose its coagulation effect, and the skin will be red, swollen and itchy, just because of the stimulating reaction caused by this saliva. Mosquito saliva can also infect people with germs, which is why mosquitoes can infect malaria, encephalitis and yellow fever. But not all female mosquitoes can suck blood, and mosquitoes like mosquitoes don't suck human blood.