1. Exhaust: The doors when open let in a lot of exhaust, not
good ventilation, it is heavy especially at 87 side of the
interchange when there is fully block, less for the compass
point/SKLRT/Sengkang MRT station part, try AMK INT, the int smells
nice due to good ventilation system, except when AMK HUB is close,
pple whom take last bus from there would know what i meant.
2. Rotten Items: A big possibility of rotten things roaming in
interchange.
3. Pee/Poop: Not a need for clause and effect explaination.
Experienced 1-3 in SK INT before