To find out if blood is sweeter, you need not ask mosquitoes, but be tested for sugar :)) Suitability may depend on the diet. For example, mosquitoes (by the way, ticks too) bite less people who eat garlic.
Yes, it may well be that your blood is "sweeter" for mosquitoes. As I wrote earlier (see link below), mosquitoes prefer women / girls. Among the ladies, for reasons unknown to scientists, they prefer blondes. Also, mosquitoes are especially fond of women who are about to give birth. Even blood-sucking insects are susceptible to men and women with increased levels of sex hormones - testosterone and estrogen, respectively. Mosquitoes also find the "scent" of people with increased concentrations of steroids or cholesterol on the skin's surface pleasant. Therefore, obese people, heart patients and patients with atherosclerosis feast on with great appetite. But this does not mean that mosquitoes prey on people with high total cholesterol levels. These may be people whose body processes cholesterol more efficiently, leaving its by-products on the skin's surface.
TheQuestion: we will find those who will answer your questions.