Hank treats a perfumer who fears his livelihood is in jeopardy when he starts losing his sense of smell. Evan and Ray hold a grand opening for their joint venture, HankLab, where HankMed treats a talented nail artist whose summer cold turns out to be something much more serious. Emma finds herself on the receiving end of Oz’s snark while Divya’s attempt to protect Jeremiah puts a strain on their relationship. Hank and Charlotte go to New York to take the first step toward finding a specialist to help with her condition.