Although this achievement is straightforward, this video provides a quick overview of what you'll need to do to unlock it. The short version:
1) You need 1 Yucca and 1 Black Powder to craft a smoke grenade (so you'll need 3 of each to craft 3 smoke grenades).
2) Once you have the crafting items, open your weapons wheel with
, navigate up/down to smoke grenades using
, hold
to craft your items. You can also craft them on a workbench, found under "Combat Supplies."
3) Use them by hitting
when they're your selected throwable.
4) Once you've thrown 3 the achievement is yours!