No. It’s not possible. He has no direct access to your computer. Just don’t click on any links he posts.

So more of a twatroom then, at least in that morons case. On a happier note, welcome to fluther.

“troll”
‘nuff said, really. If he could really do that, and he would really be willing to do it, I reckon he probably wouldn’t be telling you about it, he would have done so already. Although of course predicting trolls is not an exact science.
More importantly, what @MrItty said. I’m fairly certain this is not technically possible.

Depends on your web browser version, plugins and operating system. For example, Windohs and M$ Outhouse used to have an “enabling technology” (cough) bug where a program could be inserted into and to and run from an image, which could be posted to a forum. Probably not happening in the case of such a troll, though.

You know it’s a “Troll”...
But don’t know if this troll can send a virus…

Chances are the chatroom you’re using uses javascript, so it’s theoretically possible that javascript-based attacks could be employed. It’s really unlikely that he could target you with these attacks, but I suppose it could happen if he got hold of your IP address. It would be extremely difficult if not impossible to give you a virus in any case.