condo asphyxiations in Mexico

[Jim Baird]

http://www.latimes.com/world/la-fg-mexico-family-dead-20180324-story.html

Could this event be from lack of combustion air?  Or was it effluent?

[Marc]

My guess is that there would not have been a determination that gas was the culprit unless a gas leak had been found in the home.

[Jim Katen]

I once stayed in a condo in Mexico where the old drum trap had been converted into a floor drain. They simply took off the cover from the trap and placed a grate over it instead. The smell was enough to knock you over. I tried to explain the issue to the manager, but she didn't want to hear about it. Finally fixed the issue by folding up a wet towel and placing it over the grate.