Fleas

So. My boyfriend's cat got fleas when we took her home to his parent's house for spring break. We brought her home to his apartment, and shortly after a flea jumped on me. When I told him, he didn't believe me because.. He's a guy 😂.  A few weeks later, his room mate has hives and is bleeding through his pants and I have to get the blood out. We've all now been bitten by the fleas. Just today I shook my towel out before I used it, I'm thankful I did, bc like 40 fell out. We've bombed, sprayed,gave the cat baths, treated the cat... Idk what to do anymore. HELP.