In my flat I have a ceiling vent in the kitchen that doesn't get used (it has to be manually turned on and we just use the cooker hood for ventilation) but it makes a very loud and very annoying rattling noise that can even be heard in the bedroom. The landlord won't do anything about it and politely told us to deal with it but as I work from home a lot, it can be extremely distracting having a random loud noise every few minutes.
My solution may sound very stupid - I've managed to cling film the removable cover which has actually stopped the noise - but I am not sure whether this is safe or not. If the vent does not get turned on then surely it is safe?
I don't really know a lot about ventilation so some advice on this would be great, or even better, some safer and budget friendly solutions. Thanks!