Durian fruit, Chantaburi, Thailand
Sweaty socks in a forgotten gym bag? Sewage on a sunny day? Neither of these odour powerhouses quite nails the stench of durian, south-east Asia's king of fruit. The chef Anthony Bourdain perhaps came closest in describing the smell with his image of "frenchkissing your dead grandmother".
Durian smells so rank that it's even banned from public transport in some countries. Yet, try it and you'll find the flesh inside the spiked carapace creamy, custardy and tempting. The annual World Durian Festival in Thailand's Chanthaburi province, held in May, marks the start of the durian-eating season.