In a lab, organisms are kept in controlled environments. Natural environments tend to be quite variable. Biological molecules do not tolerate variability very well--the more frequently the temperature changes, especially between freezing and non-freezing temperatures, the more damaged those molecules become.
In short, I don't expect the virus would survive long outside of a controlled environment.
Droplets fall to the ground pretty quickly, so you aren't likely to be exposed unless you walk barefoot... which you shouldn't be doing if you know someone is sick nearby.
The chance that you will ever see someone with Ebola is extremely small (unless you are volunteering to go help out in Africa)--but if you *do* ever come across a situation where a symptomatic Ebola patient has been in the area, you want to sterilize every surface that patient has touched. Bleach is very effective at killing virus.
And as for encountering an Ebola patient, with the PC garbage this regime is forcing down our throats? I say close ALL comercial flights and use military or charter flights. I`ll repeat, I LIVE NEAR AKRON, OHIO. Ever heard of Amber Vinson? BTW, her family works at Kent State University, my daughter is attending Kent State, well? Nice roll of the dice, eh Dem-mom? So this is personal.
“Droplets fall to the ground pretty quickly . . .”
How quick is pretty quickly? What is fog?
On foggy mornings, windshield wipers (intermittent) are necessary for visibility. Is this not droplets suspended in the air?