What is smelling onions a symptom of?

Phantosmia may be caused by a head injury or upper respiratory infection. It can also be caused by aging, trauma, temporal lobe seizures, inflamed sinuses, brain tumors, certain medications and Parkinson's disease. Phantosmia can also result from COVID-19 infection.

mayoclinic.org - Phantosmia: What causes olfactory hallucinations? - Mayo Clinic

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What causes olfactory hallucinations (phantosmia)? Answer From Jonathan Graff-Radford, M.D.

An olfactory hallucination (phantosmia) makes you detect smells that aren't really there in your environment. The odors you notice in phantosmia are different from person to person and may be foul or pleasant. You may notice the smells in one or both nostrils. The phantom smell may seem to always be there or it may come and go. Phantosmia may be caused by a head injury or upper respiratory infection. It can also be caused by aging, trauma, temporal lobe seizures, inflamed sinuses, brain tumors, certain medications and Parkinson's disease. Phantosmia can also result from COVID-19 infection. Talk to your health care provider if you have symptoms of phantosmia, so that they can rule out any serious underlying disorders that may be causing olfactory hallucination. Parosmia is another smell disorder that's similar to phantosmia. But in parosmia a smell that's present in your environment is changed and doesn't smell as it typically would. Parosmia can occur with damage to the olfactory system. This can happen after a severe respiratory infection, including COVID-19 .

With Jonathan Graff-Radford, M.D.

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What cleans just as good as bleach?

A thick paste made of a half-cup of vinegar and a quarter-cup baking soda will spiff up bathroom tiles -- as will scrubbing with half a lemon dipped in borax powder. A spray consisting of equal parts vinegar, baking soda and water is an excellent multipurpose cleaner.

home.howstuffworks.com - How to Disinfect Your Bathroom Without Bleach - Home and Garden

" " There are plenty of bleach-alternatives that will do just as good a job at cleaning your bathroom. iStockphoto/ Thinkstock Some of us are minimalists when it comes to cleaning the bathroom. A spritz of spray cleaner here, a wipe here, a squeeze of toilet cleaner there, a little scrub here and we're done. For others, though, that approach doesn't quite cut it. For the more militant housekeepers among us, a bathroom isn't truly spotless unless it's been disinfected with bleach, and lots of it. And it's for good reason that some are so devoted -- bleach is an amazing sanitizer. It pulverizes mold, decimates mildew and destroys germs. But if you're a die-hard member of the bleach brigade, you might want to think again about your cleanser of choice. Chlorine bleach isn't exactly the best thing for your (or your children's) lungs. It's a known carcinogen that can cause burns, respiratory problems and gastrointestinal issues. If you happen to mix it with anything that contains ammonia, it produces an extremely toxic gas. Bleach can also cause serious pollution. According to the Environmental Protection Agency, our indoor air is twice as polluted as the outdoor air, mostly because of the cleaners we use. Studies have shown that chlorinated VOC (volatile organic compound) levels in the home skyrocket when you clean with bleach. But, you ask, if bleach is off-limits, what else can I use to disinfect my bathroom? There are plenty of effective alternatives out there that aren't so dangerous. On the next page we'll tell you about some of them.

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