Little Flying Biting Insects In House?

I have tons of these little, biting, flying insects that have infested my home so much that I hate coming back to my house. I don't know whether they are gnats or midges or what but, they are biting and annoying me so badly. They even like to fly in your ear, up your nose, in your eyes, and in your clothing while on you.

I think I have brought them in from my job because that is where the biting started. I work at a manufacturing plant around a lot of oil, solvents, etc. They like to fly around anything that is dirty or filthy. Can someone please help on a suggestion on how to kill and get rid of them?

By exhausted