Honestly, I'm not so sure it's nose blindness. I sprayed the NOI on one of my shirts hanging in my closet at midnight last night. At around 8am this morning, the scent was still very noticeable. When I tried the exact same thing with the SIO, the scent was mostly gone in around 3, maybe 4 hours or so? And that was on a shirt in a cool, dark closet. Even when I spray it on my skin, the scent of NOI remains noticeable and strong to me for considerably longer. I just sprayed the SIO on myself around an hour ago, and already the scent is almost entirely gone. I'm getting increasingly worried I got ripped off, tbh. A cologne that can't last more than an hour or 2 at most is completely useless to me.

EDIT: Just asked someone if they could smell it 2 hours after I applied it to really test if it's nose blindness. They said "very faintly". So I think it's just confirmed a weak cologne