Your biggest concern on mixer that has a transaction to money launderer is you receiving Bitcoins from them especially when the mixer that use was seize by the government because your Bitcoin address will be on the watch list which you will have a problem if you send your coins on CEX.

But if you are from a country like 3rd world country that doesn’t give much attention to crypto then you are just fine since your government is the only one who can knock on your down and not US government that typically aggressive on this matter.