There are products in the supermarkets in Australia that are 'odour absorbers' - intended for shoes (these are sprayed on, so might not be suitable) - also there is something here called 'Nilodor' (and some equivalents) - which when a drop is placed where it can evaporate, will kill off many odours, even without physical contact.

The shoe types seem to contain some isopropyl alcohol, on the theory that mere contact with alcohols tends to to disrupt most of the molecules that are 'smelly'.