There are very small insects flying around my azaleas. They have red heads and a black body.

Question

One landed on me and bit me!

Answer 1

Sounds like a biting fly! Flying insects are hard to control; sometimes avoidance is the best you can do, such as wearing a product containing DEET while outside.

https://www.gardeningknowhow.com/plant-problems/pests/insects/how-to-stop-no-see-um-insects.htm

https://extension.uga.edu/publications/detail.html?number=C782&title=Stinging%20and%20Biting%20Pests

https://www.gardeningknowhow.com/plant-problems/pests/insects/how-to-stop-no-see-um-insects.htm