I've actually
been foolish enough to suffer, try this and go veggie for a few years weeks before the season. I hate vegetables.
. And as said here, hunt smart, DOWNWIND. Whether or not you eat meat, you still give off a foreign odor that alarms deer. Period.
I can honestly say that a smart hunter using the wind on a daily basis will encounter as many and probably more deer than people with scent elimination clothing, clorophyll pills, veg diets, etc. that feel they have an edge and drop their guard.
I know, I spent the money, I suffered, and I learned. Use what you already have in your top knot, you will have your best success.