According to Cshenk :

"Chris Lewis" wrote

The more significant rationale seems to be that driftwood on ocean
beaches is laden with salt. Entirely aside from the mentioned
potential of dioxin/furan production, chlorine ions and heat will
accelerate the corrosion of metal stove or venting systems, and
aren't terribly good to be downwind of either.

Snicker, ok. I'd not burn it inside but it seems strange that something i
can drop in my fishtank (goldies) would harm me if burned.

I'll bet that you don't put driftwood fresh off a sal****er beach
in with the goldfish...

Presuming by "goldie" you mean goldfish. I don't know how
tolerant of salt goldfish are. Some tropical fish aren't tolerant
of salt at all.

I'd hope you wouldn't throw it in without at least rinsing it
first. How many people rinse their firewood? ;-)
--
Chris Lewis,

Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.