If it’s a real person, then not really.  The only thing you could fry is making the form more complicated to want to fill out. I had a client that this was happening to, what we did was build a new form called Pin # and had it load in a bootstrap modal via an html field on the main form.  It had two fields, an email field and a text field that generated a random number. We then added a single line text look up field to the main form that lookup up the random generated number. That lookup field was required for the main form to be submitted. So if they didn’t have a random number that matched an entry they couldn’t submit the form.  

So a human spammer doesn’t want to do all that to just send a random ad. 

just keep in mind this may cut down on people, wanting to submit forms that you are expecting as well.