"Okay, I can do this," you think pulling your mind back from the sensory overload a bit to reiterate on your goal. "All I gotta do is sniff the box, see if I can identify who touched it, and then follow their scent from this building to somewhere else. As long as I'm back before, I dunno, like 7pm, everything should be okay. I'll probably be back before five even. And it just said that it can't guarantee I'll change back if I'm beyond 20ft, not that anything bad will actually happen if I don't make it."
You wiggle your nose at the end of your snout, crossing your eyes to glimpse your new detector. The scents coming through it are many, but they've remained fairly consistent around you since they seemingly bombarded you all at once. Some of them seem closer, and some seem farther away. Somehow you can tell that some smells are newer and some smells are older. With some patience, you think you can get used to this and do what needs done. At least you don't think you'll get lost, because tracking yourself back to the apartment will be effortless.
Those long ears dangling under your chin are annoying, but they are what hounds have to put up with their entire lives, so you think you can manage for six hours. Lifting a front paw shifts your weight and reminds you that what used to be your hand is just a foot now, which reminds you that the full-body transformation might have been a bad idea. Will your investigation reach a dead end without being able to hold or pick up anything? What if you need to open doors or something? Too late now. Your four-legged stance is fairly stable, and you find yourself walking with ease and circling around a bit to see your new body before your leave. Your back feet are almost on tiptoes which will take some getting used to, but you've already got the hang of walking on them like any other canine. That big unneutered male sheath is unmistakable, but there's no point in hiding it if everyone is going to see you as just a dog. That long bloodhound tail of yours is hanging almost to the floor, and it still feels weird to have it back there, but at least you've got it under control to a certain extent. You crane your rear appendage straight up and marvel at its height compared with the rest of you. The weird bend in your tail sort of curls it up over your back, and you can even feel the end of your spine pointing forward which kind of freaks you out. Hopefully you won't be stuck with this thing!
You drop your tail back down to its relaxed position and pad your way over to the box. You kick your sharp nose into action and sniff every nook and cranny in it. You notice that one of the smells is not only very strong but also inexplicably familiar, even though you've never smelled it through a nose like this before. Some unexpected insight signals you that it is a human scent, as opposed to a dog or some other living being. You realize it must be your old scent, from before you were a hound! You also realize there's another human scent, only slightly less recent than your own. That's who delivered the box! It's kind of hard to pull yourself away, because your getting so much information. There are other human scents that are much weaker, maybe whoever packed the Chronivac and maybe whoever manufactured the box! "I should have upgraded to a dog's nose years ago!" you think to yourself, impressed.
Your genuine interest and your sheer satisfaction at having found the scent you were looking for sends an urge through your back, and soon you find your tail starting to wag. Yikes! That's going to be annoying, isn't it? "Just six hours," you remind yourself again. With the scents in your nose and the important one fresh in your mind, you put one paw in front of the other and make your way to the window. You brace yourself, hop through it and land easily on the fire escape with your new pads beneath you. You traipse down the stars with your claws clicking on metal and soon find yourself at the sidewalk. Running around to the front of the building with the speed of a dog, you sniff the ground attentively, with your tail held high and waving slightly above you. The sheer number of people who have passed in and out of the front door is astounding! But soon you've found the scent you were looking for and take off up the sidewalk to see where it came from.