Davis regains his sense of smell in this episode after apparently losing it as a 9 year old, but in the season 1 episode, 'Grad '68', he remarks how nice the bathrooms smell.
When Hank, Lacy and Brent are in the bar discussing why Hank lost to Emma at Scrabble the camera shows Brent drinking his rye and seven but when it switches to Hank and Lacy the glass is on the table. When it switches back to Brent its back in his hand again. Final scene shows the entire table and there is only one rye and seven shown.
When Hank is playing Scrabble he plays the word "AAAAAAHH". They show the board and ten "A" tiles are visible. There are only nine "A" tiles in Scrabble.