We work with a lot of Indians on our floor. We also have a "Curry Depth Con" communication via Instant Message for the air quality of our floor's restroom.
1 is "safe, stink non-existent" and the other end of the scale, 10, is "Use another floor in the building.
That explains the second floor of my building. It's a software development department - I'm not sure for which on-board systems. I've walked into that men's room before when it was at Defcon 10 (although "DepthCon" is definitely more descriptive).
That particular restroom has about 8 stalls and there are certain times of day when that particular software department is working at full utilization.
Of course, we have homegrown sphincterrorism here as well. There was this guy named Dick Smith (RIP, massive heart attack) whose girth - no lie, and he'd prove it by holding his belt above his head and showing that it touched the floor - exceeded his height. That guy could generate a porcelain racing stripe and depthcon 10 all on his own. I note that, if he was feeling courteous, he'd "ripple flush" the commercial crapper to suck the noxious material down as it emerged, more or less. That ripple flushing was pretty impressive. You've probably heard the old adage, "the horse that s41ts fast doesn't s41t long".
Dick proved that one wrong.