The fact is menstrual blood itself has no smell but when the blood down there stays for a while, and comes in contact with air and bacteria then there is a slight smell. There’s no way anyone else can smell it.
Disposable pads contain lots of chemicals which can actually make your period smell stronger. Scented disposable pad make it worst. When your menstrual blood mixes with chemical perfumes on disposable pads, it can lead to foul smell.
Cloth pads are more breathable and stay fresher than disposable pads. Less moisture means fewer bacteria to produce unwanted odors.
Make sure to keep clean and change the pads frequently to avoid unpleasant odors.