Could A Space Mcdonalds Exist? in Science & Spaceflight Posted Tuesday at 03:35 PM Actually, NASA doesn't know why *some people* experience taste differently in space. Some don't notice a difference at all, and afaik there's no supposed biological mechanism that would make food taste different in the long term (stuffy "space head" doesn't tend to last that long). It could just be that foods have been prepackaged for a long time before consumption. Or it could be that food scents just have to compete in an extremely odorous environment, and a larger living area with better air conditioning would solve the problem. We haven't ruled out all the non-biological factors, basically.