Crypto trading involves risk, and scam tokens are a real part of the landscape. A few habits will help you avoid most of them.
Check the token's liquidity before buying. If liquidity is very low or has been recently removed, that is a red flag. fomo shows liquidity data on each token's page.
Look at holder distribution. If a small number of wallets hold a large percentage of the total supply, the token is vulnerable to a coordinated dump.
Be cautious with tokens that appear in your wallet without you buying them. These are almost always airdropped scam tokens sent automatically by bad actors. They often display a fake dollar value but cannot actually be sold. Do not interact with them.
Be careful what you connect your wallet to. Some sites ask you to connect and then sign a request that looks like a claim, an airdrop or a verification step, but is actually a permission that lets another address move a token out of your wallet.
That permission stays active after you leave the site, and it can be used days later with no new signature from you. There are bad actors whose whole aim is to get a wallet connected and a request signed so they can take what is in it.
fomo itself has no feature for connecting your wallet to other sites, so this applies once you have exported your key into another wallet app. Only connect to sites you trust, and if you have signed something you did not mean to, revoke the permission from a wallet that holds your key.
If a token displays a warning label in the app, take it seriously. The label exists because something about the token's contract or trading activity puts buyers at risk.