Where are these made?

Hello, We do make our garments all over, they are all shipped to the same location and placed in the same bins. Unfortunately, we wouldn't know where the items are made before purchasing. We manufacture our items in Haiti, Costa Rica, China, Myanmar, Honduras etc.

Where is the size's chart?

Hello, I have been wearing these Jockey Elance for over 25 years. My waist size varies between Mens 28"- 30" all my life, Thus I always choose the small size. Hope this helps as I don't know where the size chart is either. These are good underwear, last for many years.

Equivalates to roughly a medium in Men's sixes, the large being a 36, but all are elastic at the waist to accommodate variances. Though my waist is a 38, I find the x-large quite loose, and on me they fall down, so I wear the large quite comfortably

Was there any chemical smell or odor when they arrived? Also, are they treated with any anti-bacterial or other unwanted anti's?

No chemical smell. Don't know about "antibacterial" treatment, but I doubt it. They are washed regularly, as they should. They are not made for jungle warfare.