In order to make the things more clear, I will detail how to mark some address as freezed so that the dusted coins do not mark other clean coins:
ELECTRUM
To avoid privacy concerns I created a test wallet, so you don't actually see any sats on the freezed address.
1.Make Electrum show all your Addresses.Click on "View" menù, Select "Show Addresses"
2.Select the address where you received the dust.
Right Click on the dusted address, select "Freeze"
3. The Address is now Freezed.
From now on, all the UTXO pertaining that address won't be used until the address is Freezed.
Those UTXO won't mix with other "clean" UTXO then, defending us from the Dusting Attack.