Re AIQ, I've actually built a couple of devices myself (using different sensors, plantower being the most popular one, but I've played with sensiron and others as well) but I've mostly focused on the PM monitoring.
The sockets that have strange "smell" are actually on the (inside) wall that is the building boundary (i.e. not a wall with a neighbour — these sockets don't "smell"). Still, it's a bit shocking to me that this could happen. Do you know how the humidity "got" onto your wall? How were you able to find out? I'm pretty early in my mini "investigation".
Re AIQ, I've actually built a couple of devices myself (using different sensors, plantower being the most popular one, but I've played with sensiron and others as well) but I've mostly focused on the PM monitoring.
The sockets that have strange "smell" are actually on the (inside) wall that is the building boundary (i.e. not a wall with a neighbour — these sockets don't "smell"). Still, it's a bit shocking to me that this could happen. Do you know how the humidity "got" onto your wall? How were you able to find out? I'm pretty early in my mini "investigation".