My experience in the Alaska interior,(Alaska Range). Scent alone will not spook your approaching moose. Their size is one of their defenses, but if they smell you and see you move they will avoid you. I have smelled of days without a shower and camp fire smoke and still had bulls walk within bow range. I of course was more nervous than the moose at close range, nervous of being ran over. Most moose have not encountered a human and do not know exactly what we smell like or identify that smell with danger. If they do smell you and want to avoid you they usually do not dash off and gone in a flash. They just change directions and yes like the other guy said can disappear in the brush and not be seen. Amazing that an aminal that size can just disappear. Try and control your scent but no need to go over board like for deer and Elk. The vegitation scent is overwhelming in Alaska, cool temps, rain and mostly low winds work to your advantage there. Good luck and be patient, find elevation for spotting, then call in or stalk.