Posted: Sun May 26, 2019 8:14pm
Run water into your bathroom items, Sink, Shower, Bidet and even flush the Toilet.
We are in Spain, its hot, the evaporation of the water which remains in the u-bend / trap is faster than in the UK, plus if the property is left unused for a period of time this will always happen.
The u-bend / trap is designed to a) keep odours away, b)stop insects crawling in from the waste system and c) catch items we drop down the plugholes by mistake! (OK, the last one may be a bonus rather than design criteria!)
The bottom line is, run water into all the sanitaryware and the odour will pass. If you wish, you can add bleach, disinfectant, toilet duck etc and soda crystals also help. Try and avoid stronger acids though and I personally would avoid caustic soda as it will affect the pipework over time.
Hope it helps