I've just bought a Lululemon yoga mat. It arrived this morning and it absolutely stinks of fish! I know this is a common issue and they recommend that airing it for a few days will get rid of it. However, I now remember that I had the same issue with another of their mats that I bought years ago and the smell never went. Does anyone have any ideas on how to get rid of the smell permanently? It's a shame as it's a really nice mat!