I'm done with my formaldehyde death-trap.
However, I don't think they will be exposed to too much formaldehyde due to the faux finish inside sealing it off.
From what I understand, most of those fumes evaporate soon after wood is built.
But one thing they WON'T be exposed to is Checkmite(TM) or any other obnoxious chemical that's 20 times more harsh/deadly.
Here are the pics: