Best thing to do is just speak of it as an investment that you only put a little into (even if it's not true)

Remember crypto and blockchain has a very bad name in the mainstream and they have done some serious damage to blockchain adoption.

Saying this normal people see it as a highly volatile scam and will only adopt it when they are told to do so.

So by being low key but positive and saying it's only a very small part of your investment portfolio people will listen and possibly look into it more , when you come in hard people get their backs up and you could turn them off the whole concept until their bank or government tell them it's ok.