Always read and follow the care instructions and any warnings on the garment label. And, follow the General Rules for washable fabric stain removal.
Most odors should be removed by normal laundering.
For stubborn odors place calcium carbonate crystals, activated charcoal, or soda in an open container and store with clothes in the closet, or sprinkle the clothes with soda, let stand, and then vacuum.
Although a little odd, for really persistant odors, try placing a thin layer of kitty litter on the clothing and let it stay for a couple of days. Then vacuum. It works!
ZYIA - Item 793 - Black Brilliant Hi-Rise Leggings 28
The most versatile of all workout clothing, our brilliant performance legging reigns supreme. The high, structured waistband comes right to your bellybutton and won't dig, pinch, or tug as you move. Flat-serged seams inside and out— plus 25% Spandex content—provide the wear-all-day comfort you demand from a quality legging.
ZYIA - Item 3511 - Men's Gray Track Sport Jogger 31
The supreme, heavy-weight fabric gives this design a substantive feel that's breathable and packs the perfect amount of stretch. Articulated detailing at the thigh, knee, and crotch deliver contemporary styling and comfort. There are front hip pockets, cord-style drawstring, and invisible ankle zips.