If you are wired as described, with no line voltage being fed to the 2 switch signals, there is virtually no chance that you are suffering a noise issue.
There are two possible causes for this mysterious turn on. The most probably cause is a scene or trigger action that is causing Vera to turn on the light. You can determine if this is happening by examining Vera’s log at the time of a mysterious turn on and see if Vera issued the command.
The other possibility is that the Aeon microswitch may be bad.