Hello TamOZGal! Welcome to SpiritKeep. =)
I'm glad that you've joined our message board and have shared your story. That's an interesting encounter. I wish I had more of an explanation for you, but first I'd just like to say that NO, you and your mother are not mad!
With something like this - and since I wasn't there to witness the dynamics (not that that's a problem) - I'd just like to impart a possible cause to rule out, before assuming it was paranormal. Was there a window behind your sitting position (at any angle, from your side/opposing)? , which might have shown car headlights in the position where your Mom was sitting across from you? Car headlights (that perhaps pause and then are moving) can look pretty creepy as they come through glass windows and onto a wall as the car turns a corner, say.
Next, as for the smell... what did it smell like? Can you describe it? And your mother smelled it as well, yes? Was it something that reminded you of something you know or, or no? I personally experienced something paranormal when I was a child and it accompanied an off-putting smell... yet it was a smell I knew of. Oddly, as this experience happened, and moreso afterward, I realized *what* the smell was of, but it was something I didn't like and was not possible at the time of the paranormal experience. Anyway.... more on that later, if you like.
But you mentioned a ribbon-like smoke.. I'd say take pictures! Really.... take some pictures at the same angle, and preferrably the same time slot, as you did when you saw it the first time. Don't always wait for 'it' -- just snap photos periodically and keep notes on what's happening both inside and outside (cars, etc) as the pics are taken. You may find a logical reason, or you may not. Either way, we'd love to hear what happens. =)
Best,
Kell
[ March 16, 2007, 11:59 PM: Message edited by: KellKell ]