I have never heard about this kind of airdrop scam before, the hackers will send a token to victims address (like ethereum address), if the victim wants to exchange the airdrop token to another coin that can be traded to fiat or so, the victim will lose all other coins that address holds, this is new to me but there is nothing impossible with hackers.
1. Avoid participating in airdrops at all and giving out your sensitive details like email addresses and wallet addresses.
2. If you must, use fresh address for each airdrop and token.
The first can lead to scam attempt which can be successful if hackers use the information given them against the person that have them.
If fresh email is used, that is not resistant to hackers to send email to the person but new emails will be good to have privacy but not completely safe.