Smoking and aquarium

[cvrle1]

Not sure where to really put this thread so hopefully this is the good place. I tried search, but couldn't find any info on this topic.

I have my aquarium in a den. Sometimes when guests come over, they will smoke in that room (once a month or maby twice) I was just curious if that will be a problem. Right now all i got is sand and water in my aquarium/sump and thats it. I will start adding LR and everything else slowly over the next few months, but I just wanted to check about smoking in the same room and what effects can it have, if any.

Also, my cousins were here for last 2 weeks and one of them smokes quite a bit, so that room had a lot of smoke in it. Just wanted to check if anything could have entered the water, that shouldn't be there, and in turn if I should change the water, or if it would be safe to leave it as it is and go on.

Thanks for the help.