I just purchased a 1948 pier-and-beam in Austin. The pest control guy came to deal with rats, and asked me to locate my vent stacks. We seem to have one for the washing machine, but none is visible for either the bathroom sink or the kitchen sink.
Is this normal? Should I be looking for a vent stack terminating in the attic, perhaps under the ceiling insulation? There's definitely an unpleasant smell in the house from time to time.
Both the bathroom and the kitchen are original (though the bathroom has been updated).
It may also be worth noting that there's a guesthouse, which I believe utilizes a sump pump to deal with its sewage. The guesthouse has its own stack pipe.