I'm 52 and I have noticed that some things smell strange to me - foods especially. I didn't really connect it to this but it's got me thinking.
For the hot flashes, I've been taking a homeopathic medicine that my doctor gave me and for me, it's worked splendidly. I don't know anything about homeopathy and when my doc suggested them, she said to try it for a month or so and see if it helped. I was flash-free within a week! I was pretty sure it was kind of a placebo effect thing because it worked so fast, but then 2 friends of mine tried it and it worked just as well for them. Anyway, I'm not affiliated in any way with this company, etc., but I thought I'd share since it's very inexpensive and no side effects that I'm aware of. It's called Klimaktheel and a bottle of 100 is $20-25 on the net. You're supposed to let one tablet dissolve under your tongue 3 times a day initially. (Don't chew it because the acids in your stomach will "kill" it.) Do this until you get relief of your symptoms and then cut back to twice a day. Then back to once daily, if you have symptom relief. Here's a link that lists the ingredients:
Heel Klimaktheel at Smallflower.com
(I just buy it where ever it's on sale when I run out.