Right, I wasn't thinking correctly.
So two issues here, Sales Alert for email opens and Interesting Moment alerts for website visits.
To the Sales Alert, I'm not sure how the ad rep field would affect it, but its worth testing by removing it. I'd create a new campaign without filters for the sales rep and try sending alerts that way. Also have you looked at the activity records for these leads? You should be able to determine whether its caused by the smart list or the flow by seeing if they log the lead as qualifying for the smart campaign.
To the interesting moments: a workaround will be to filter on the status of the web visitor as a known customer. This wouldn't eliminate anonymous IPs that visit your client site, but that doesn't sound like an issue if you are only tracking known leads.