What about 1. Laundry - both clothing and bedding 2. Deodorant use, and 3. general home cleanliness. Might need to ask a friend or trusted acquaintance to help with a sniff test. If it’s your mouth, could be sulfur producing bacteria and there are medicines for that. Also check for tonsil stones.

That's a bit excessive. Showering that much can dry out your skin and brushing your teeth that often will damage your enamel

Sounds like a medical issue, go see a doctor.

Several things: 1. See a doctor. Excessive body order can be due to a number of conditions like hormonal imbalances or infections 2. Washing that much may be making it worse- you're stripping your body of its natural oils/ defenses so it will over produce to compensate 3. Brushing your teeth that much will irritate your gums and damage the enamel- which cab cause periodontal diseases. Stick to chewing gum, sprays or mints for fresh breath 4. Wash/ replace your clothes and bedding. Pre-soak them. But also wash out your washing machine and hoses, dry clothes in the sun and consider different detergents 5. Consider different cosmetics. Also check if your deodorant is a deodorant or an anti perspirant. They are different things. And even reputable brands don't always offer fantastic protection. A good sports/ medical brand can make a world of difference

Do you use deodorant? lotion? mildly scented cologne? You may need a mild cover up cuz its likely your diet.

Definitely see a doctor and a nutritionist

Do you have cats? I had an ex and a previous employee who couldn’t smell the odor of cat pee and so if their cats peed on something it smelled so bad to everyone else and they had no idea.