I would say to hide the taste, but I think you'd have to shove horseradish or worse into your nose to cover the smell. My nose is too delicate for that, and yours doesn't need the extra abuse.

Thanks for taking one for the team though, now I can make jokes that Jay-Z was rapping about natto the whole time. ♪ Gimme that funk, that sweet, that nasty, that gushy stuff ♪