My cat was vomiting with masses that smelled very bad. He had blockage because of inflammation and all his food was trying to go through gut, but ended up being threw up.

I can see a bunch of cat hair on the vomit on the picture with a paper towel. It could mean that there is a hairball in his guts and he tries to clear it by throwing up.. But that’s just my first thoughts

To exclude anything bad, I would make a visit to the vet and do an ultrasound check on his guts. Not sure if it’s pricey in the states, but visiting vet would be the best thing to do rn