Monitoring damp

[fatsatsuma]

My elderly mother lives in a flat in a sheltered housing complex. There was a flood a few months which didn't directly affect her flat. But it's now smelling damp and feeling humid and I'm concerned that there is dampness somewhere that we haven't tracked down.
I know that there are health implications for people living with damp/mould, especially the elderly. Is there a simple piece of equipment we can get to monitor the air quality/humidity in her flat?
We're trying to encourage her to open the windows etc but she hates a draught so not very keen!

[fatsatsuma]

Thanks for these replies. I think the humidity meter is what I'm after. If I find that the levels are too high then it sounds like a dehumidifier would be the next step. Thanks again.

[JugglingChaotically]

Ours is an ebac. Highly recommend.
House feels so much warmer too.

[JugglingChaotically]

Rent or buy a dehumidifier?
Works a treat. Run on high for a bit then on auto. When it switches itself off you know you are sorted.
Dries washing quickly too!

[wowfudge]

Yes - a hygrometer, or humidity meter. We bought one after a burst pipe flooded our cellar. I got it off eBay and it was a German name brand.

If you google average humidity levels you can find out what they should be and see if the levels at your DM's exceed that. She may find a dehumidifier beneficial.

Damp can take a long time to dry out and if it is trapped and can't evaporate easily, that will make it smell.