How to suppress implicit not found errors?

The Scala plugin now has this fantastic feature of showing implicit hints and implicit not found errors. But when using whitebox macros, it doesn't work accurately sometimes. Is there a way to suppress error underline in places where I know there is no way IDEA can figure out the correct type / implicit?

I dont want to turn that feature off completely, because it works very well. I just want to mark a few places in the code.