I read somewhere recently (can't remember where exactly) that when you smell a fart it means that microscopic particles of human faeces are captured in the tiny nasal follicles (the tiny hairs in your nose)... so using this logic, if you can smell a pooey nappy then this should mean that the same particles are floating around contaminating the air. Sorry if this is TMI for some people. But I think that it's too easy to disengage yourself from the responsibility of your waste. Sposie nappies have helped create a 'chuck and forget' attitude that I think it's very unhealthy. People, on the whole, have become way too precious these days... and disrespectful in the process.