We've just had a new patio laid with a drainage system to take the run off water into the drains. It is an Edwardian terrace with combined drains as far as I know and the drainage for the new gully is into existing connection previously used for the downpipe. The patio is sandstone with some pointing (no idea what it's made of but it contains some kind of sand like material) in between. We've used a reliable, insured workman.
The patio is finished and it and the garden smells strongly of banana skin. We were away for the last two days of the job so haven't had a chance to ask questions of the contractor yet but will follow up by email. I just wondered if anyone had any ideas what this could be?!
It is definately coming from the patio. I can smell it although less strongly from the upstairs windows. Our houses have the L shape at the back where smells tend to pool but the smell extends to a good few metres away from the patio into the grass area. Also there does seem to be a footprint stain on one of the slabs. So maybe they've sealed them with something...