I would keep the birds out of the room for a few days after you can no longer smell anything. Just because you can't smelll anything doesn't mean the fumes are totally gone, so it's best to way a few days longer to be on the safe side. Just be sure to keep the windows open and fan on to help with circulation and help the fumes get out.

Also, I want to mention that shaking the eggs won't work. I visit a bird forum sometimes and somebody there tried it with their tiel. She didn't want babies and somebody suggested shaking the eggs. She did and now all but one of them hatched. She shook them every day and she wasn't gentle with them. She was only gentle enough to keep them from breaking, but otherwise shook them vigerously.

Your best bet if they are fertile is to drop them in boiling water. This will gaurantee no hatchlings. That is if they are fertile. If they aren't then it doesn't matter.