If your worried about it then put an epoxy coating on your concrete floor. The best results come from taking a grinder to it then applying the epoxy. Every homedepot should have a grinder and vacuum setup that you can rent.
In the best case scenario then you can just use muratic acid to etch the surface then apply the epoxy. If you have any oil spots or if the concrete finishers used diesel when finishing the slab then you will need to grind it.
Epoxy is great for shop floors, it actually increases the strength of the concrete when it comes to impact, and you can clean it easily, it is also pretty easy to apply.