I wash my sheets at least once a week - i know this is hotly debated on here. They are pure cotton and I usually wash them at 60in biological powder for whites. If I dry them and put them straight back on they are fine, but if I store them for a week then put them back on there is a faint smell. I can't quite describe it. A sort of greasy smell.
I've been at home all day and have washed the whole lot at 90 twice but I have not found that has helped in the past. Is there anything else I can try? I'm not a fan of fabric conditioner as it makes my eyes stream.
I sleep alone and I had never considered myself to be particularly greasy or smelly until this issue arose.