There is a substance so noxiously pervasive that car hire agreements, restaurants, hotels, public transport and a multitude of other locations ban it from coming within 1,000 paces.
The substance is durian, an edible fruit with a famously offensive smell. Mmmmmm, sounds delicious.
If that was not enough to put me off, H told me when he first tried it as a youngster in Malaysia, he was instantly and extravagantly sick. Eurk.