After riding home from work some years back, sat at the kitchen table reading the local rag I kept getting an overpowering waft of dog sh*te, so I took my shoes off, no poo there, called my three girls into the kitchen, asked them if they could smell dog poo, they couldn't, made them take their shoes off, no poo there! But the stench was getting stronger.
By now, feeling a bit nauseous I went upstairs to shower & shave, whereupon the sickening source was discovered,................ somehow on my ride home I'd managed to get a small piece of dog shite stuck up my right nostril!!! I must have ridden over a dog egg, flicking some up onto my gear change levers, then onto my gloves and finally into my nose while launching a "snot rocket" !
Took me ages to get rid of the stench, after snorting aramis, gargling with TCP etc.