Peugeot partner heater blows stench inside

hello form members i became a member today i agree with belgium my peugeot partner 2009 model when the engine turns on the heat when it turns out to be unbearable stench, it looks like a burnt diesel 1.6 hdi engine injectors looked at today, how can this smell be from it? However, thank you very much for your help, and the horn sometimes sounds and sometimes does not sound good night.

First of all, welcome to us. Is there any wetness in the pollen filter? There are air conditioner disinfectant sprays you can take from them and make a trial. You can also open an air conditioner and try it like this.