Vacuum-Flush Head Odor Detection

To confirm the presence and location of odors, perform the 'paper towel' test. Wipe every hose section, connection point, and pump fitting with a clean, dry paper towel after the boat has been closed for several hours. Smell the towel after each wipe to identify localized concentrations of waste gas, distinguishing between general cabin air and specific points of leakage or permeation.