He's either very dirty or sick. Caked on feces smell terrible.
The substance in ground water might cause the water to have an unpleasant odor is "Sulfur".
Some of the bacteria that cause UTI will give a strong, unpleasant odor to the urine. In addition, trichomoniasis, which can cause sypmtoms similar to UTI, causes a foul vaginal odor. See your health care provider for appropriate testing and treatment.
Body odor refers to the unpleasant smell that is produced when sweating. Microorganisms, particularly bacteria, cause the offensive smell by breaking the sweat into acids.
bacteria
No. It has a very unpleasant odor.
bacteria
skunk
Butterflies do not emit unpleasant odors, but some caterpillars do. Swallowtail caterpillars are known for emitting an unpleasant odor to offend wasps and bees.
Two things are in play:1) Most candles have their own aroma, so they mask the unpleasant odor somewhat 2) The flame burns some of the molecules causing the unpleasant odor - removing them from the room.
Washing your skin is important so that bacteria cannot get into your body and cause diseases. Also, not washing your skin can cause an unpleasant odor to disturb your coworkers.
Example sentence - The unpleasant odor in the corridor became stronger as we approached the door to the laboratory.
iodine