All bunkers must have an air intake. We used to smoke rats that had tunneled under the barn floor out by pumping smoke into the tunnels. A bunker would of course have air scrubbers on the intakes, but no amount of scrubbing can remove chloramine gas. All you need is industrial ammonia (28%), available almost anywhere cleaning supplies are sold, and Chlorox (chlorine), presto...chloramine gas.
All bunkers must have an air intake. We used to smoke rats that had tunneled under the barn floor out by pumping smoke into the tunnels. A bunker would of course have air scrubbers on the intakes, but no amount of scrubbing can remove chloramine gas. All you need is industrial ammonia (28%), available almost anywhere cleaning supplies are sold, and Chlorox (chlorine), presto...chloramine gas.