If a belare with a -1 Con modifier leaves their containment suit, do they instantly turn to dust?

If a belare with a -1 Con modifier leaves their containment suit, do they instantly turn to dust? 🪐
@EsperGenesis @skydawn1 #scifi #dnd5e Even with no bonus from their Con, belare can still survive at least one round outside of their bio-suit. On the following round, they gain levels of exhaustion until they're back inside their suit.

— Rich Lescouflair 🔜 #PaxUnplugged (@skydawn1) November 18, 2022