Amortentia at Home

Dramione love story set after their 2nd child is born when Hermione, looking to revitalize her physical relationship with Draco, resorts to brewing herself a love potion. Will he be able to tell, and how is it connected to that potions lesson in their 6th year at Hogwarts? (Characters from my head-canon, as found in my longer works "The Oblivious Ones" and "Always Something".)