Hi everyone. I bought some used clothes at a boot sale a few weeks ago. They were packaged in little transparent bags and it was only when I took them out that I noticed the very strong smell left behind by whatever detergent or fabric softener the seller used. The trouble is, I can't get rid of it! I've washed them five times now and they still stink. I only use a gentle plant-based detergent (Ecos Free & Clear) and I've tried putting in some apple cider vinegar along with plenty of extra rinses to no avail. Can anyone suggest something gentle to get rid of the odour once and for all?