I own an older triplex and dont have any issues with owning older properties. It is actually built like a rock b/c they used true 2x4's and I believe they are oak, so hard you can barely drive a nail in em!! Good part is this place was well built and major settling has long past. Many older properties were built better than properties in recent years. There wasnt as many codes etc back then so it all boils down to how and who built it.
I would suggest you have a reliable home inspector or builder look it over and discuss your renovations with them to get the best feedback. You shouldnt have a big problem getting rid of the skunk smell especially if your remodeling and replacing carpets etc and painting but I would use a Kilz or my favorite is Bullseye 1-2-3 (has a stain, mold, moisture, and odor blocker).
As to the #'s if they work out to provide enough cash flow for your investment model then go for it. Every investor has a different investment model and guidelines to determine if they will buy or not. Some are more risky and some more conservative. I would highly recommend you consider looking at all the variables and rely more on your evaluation of the deal than anything. I would consider what area rents are and how long the properties in the area stay rented as well if it is in an older area of town.
Best of luck