Powerday at Willesden Junction

Some residents think that there is a smell problem coming from the Powerday recycling site at Willesden Junction. I haven't noticed this myself, and I have checked that Brent Council have not logged any complaints. If they did, I am not sure what could be done beyond exhortation. The Powerday site has planning permission from Hammersmith and Fulham, and I don't know if there is a technical fix, or even if it really is the Powerday site causing the problem.