The toilet smell must be removed from the roots.
Odor source 1:
Odor source 2:
The toilet blowdown capacity is weak. Increasing pollutant discharge diameter.
Siphon vortex does not return odor, the smell disappears instantly.
Odor source 3:
The floor drainer tightness is poor.
Choose a quality drainer, pay attention to tightness and drainage capacity.
Check toilets and floor drainer regularly, the smell won't happen again!