Some diseases can modify animal odors in subtle ways. In one study, it has been shown that infection with avian influenza (AIV) alters fecal odors in mallards. This could lead to a new detection method to root out infected birds.
Researchers have developed a chemical 'smell' which they have called “olfactory white”. Olfactory white is a mixture of many different smelly compounds. The compound has the remarkable potential to combat other strong odors.
London seriously stinks. Quite literally. The smell is being described as "putrid" and although some tried to blame the French, that was ruled out. Even the Queen at Windsor Castle, was not spared from this foul smell.