Our airing cupboard, (containing hot water tank, CH pump & shower pump), occasionally develops a 'bad smell'.
I've always put the smell down to it being over-stuffed with towels & bed linen & of something damp being added and allowed to fester.
In an attempt to prevent the problem by increasing air throughput I fitted a ventilation vent in the bottom of the door and drilled some large holes near the top. However it's recently done it again. :(
I've removed all the towels & stuff to another room but none of them particularly smell so I no longer think it's that. The other thing I've noticed this time is that the smell is evident near the ceiling of the hall below.
I started to wonder if it was a dead animal as we can get mice between floorboards occasionally but our (very active) cats have shown no interest in the area. I also took a few photos through a gap with my phone & could see nothing.
There is no sign of current dampness though the joists show tidemark evidence of a previous episode of a leak.
I'm finally wondering whether a solution would be to increase the ventilation in the space beneath the floorboards and wondering whether to simply fit a simple low-powered fan such as the Xpelair DX100 Axial
12W Bathroom Fan (Screwfix Product Code: 32270) to run ?continuously.Any other ideas?