Ian F. ) gurgled happily, sounding much like
they were saying :

No ticket checks being done just everyone being shoved past the dog's
nose and generally standing around blocking the area behind the ticket
gates.

Maybe it's not fare-dodgers they're looking for. Maybe the dog's of the
sniffer variety...

You think the

drug sniffer dog

might be a sniffer dog? Looking, perhaps, for drugs?