Low priority for breathing

Ok, my english is not good tonight, so I'll just partition the post in a list of sentences. The bug is about Dupes dying by Suffocation in high concentration breathable oxygen.

• Have a Dupe performing a long task in unbreathable air.
  • E.g. an obsidian tasteful memorial on undug abyssalyte.
• To my easily reproducible empirical knowledge, once the purple bar decrease to ~25% the Dupe enter the "Suffocating" state, and will quickly go searching for some breathable substance if he can path to it, or sadly submit to death if he can't.
• Plus, if a working Dupe enters in "Full Bladder" or "Hunger" state, he will stop any job he's working to and go to, respectively, free or fill himself.
• BUT
• If during the "Holding breath" state (not plenty sure if already "Suffocating"), a "Full bladder" (maybe "Hunger" too) event get fired, the Dupe will stop his work, go to the bathroom, and only after he is done he will catch his breath. He will not breath until he is done using the restroom.
• There are two possibilities:
  • the Dupe is going number one. He can quickly start breathing again.
  • the Dupe is going number two. He leaves the building.
    • Which are witty ways to tell that if that the toilet is close enough, the Dupe will survive.

Happened twice in half an hour.

I hope the post is understable enough.