You bought/rented your building a few years ago. You had the Fire Marshal check all your signage to be sure you were in compliance with all of the local fire and health codes. No longer worried about being fined for noncompliance, you do not give fire exit and health warning signs another thought.
Maybe you should. Interpretation of code can be subject to who is doing the interpretation. Compliance can be a tricky and subjective business due to different agencies interpreting the code according to their specifications and not necessarily the intended wording. The Fire Marshal, when inspecting your building, may still call for more exit signs, particularly if you have made any additions or modifications.
Lastly, it never hurts to remind your local fire station where your business is, just in caseā¦