As mentioned on Binance, there is an ongoing dust attack on BNB. From further reading on Binance, it would seem the proper thing to do with the BNB received during the attack would be not to spend, transfer, etc. it. Currently in Trust Wallet the solution is to create a new wallet, and just keep your undusted BNB in it, while leaving untouched the “dust” BNB in your original wallet. You can name your new wallet something like “undusted BNB”, but there is no way to rename just the BNB in your original wallet to something like “do-not-touch BNB”.
More flexible solutions would be one or more of the following:
(1) Let users “freeze” or mark BNB they receive from unknown sources so they could not be accidentally moved.
(2) Let users suffix the token names in their wallets e.g., “BNB” -> “BNB - do not touch”
(3) Perhaps warn users for incoming very small amounts of tokens, with the option to marks them as “do not move.” At least on my Binance account, I get warning from Binance each and every time new crypto is deposited, so such warning would be familiar to Binance users of Trust Wallet.
Of course, all this does not apply only to BNB. Dust attacks can happen to all coins. I just used BNB as an example.
This topic came up in thread Is there a way to create a second BNB wallet?