Ours autoflush at work, but I'm usually the first one there in the morning and the stench from what was left behind after the last flush the day before is horrible, so it could just be an incomplete flush.
Even worse is when they don't flush the can and they were the last person in there the day before. Half the time, it looks like they used an entire roll of tp as well, so you just know that if you flush it, it's gonna clog.
Then there's the "unmanned firehose effect" - urine on the top of the urinal...or the large puddle underneath...wtf?