Issues with single use period products have been well known for a good while. I use a (Hey Girls) cup but when recently caught out at work have grabbed an Always sanitary towel and they stink like they are perfumed. Why would anyone want that near their intimate and delicate parts is beyond me.
Same goes for mainstream toiletries, candles, perfumees and washing powder, dishwasher stuff, cleaners and washing up liquid etc... It all stinks and is full of hormone altering and possible carcinogenic crap. We buy eco stuff wherever possible (recommend Smol and Method for cleaning, use Ethique for hair and various eco bits for body). It is a bit more expensive but usually goes a long way and I feel like it is one less risk we are taking with our health