Yes you are in a danger to loose fund specially if it was used for eth smart contract . Anyway always do double check before sending\receiving any kind of coins and make sure it is the right wallet . some members write it down in a paper to be 100 % sure .
I've experience it though, and I realize it after creating sending transaction. It's totally a big loss for us cause we can't do anything for its recovery. Its a sort of learning for me and I now very skeptic which could make me to double check all the entries I've made.