Surprisingly, I also got some of the tokens in my wallet in a small quantity, but it seems they are listed in the exchange. I'm not sure how or why i got it but it can be from any possible airdrop but the value is not significant, which is why i didn't care that much. Also no matter what the value is, if i am not aware of any airdrop campaign i participated, i won't try to sell off that token in any dex as well. Who knows what type of new scamming methods have been used by scammers these days.
I also experienced something like this. I participated in airdrop campaigns several times and a lot of coins entered my wallet and these coins were not from the airdrop that I participated in. It does seem as if the coin is genuine but I always avoid selling it. because it's clearly a scam. There are many cases of fraud like that, the fraudsters seem to deliberately send the coins to all airdrop participants and then when we sell using a wallet connection, all our assets will also be lost.
Fraud like this often occurs among airdrop hunters, and many people always become victims because airdrop fraud is getting more sophisticated so that victims cannot differentiate between what is true and what is fake. Because it must be admitted that there are also many Airdrops that are very profitable.