It appears that this particular situation is more of a personal comment (or even a joke) rather than a plug. However, to answer your question, then the answer is yes. Eleanor Roosevelt actually allowed her name, picture, and quotes to be used in advertisements (for money) which she then donated to charity.
Why a First Lady Cashed In: Eleanor Roosevelt & The Equal Rights of Margarine
She made $500 a minute on the radio and $1000 for a lecture. She would
tally earnings of $100,000 as First Lady, prompting Congress into
examining her tax returns.
But when she let her literary and talent agents sell her image and
name to advertise products, signing them on as either sponsors of her
radio show or in magazine print advertisements, the fury was
It wasn’t just that she was seen as making money off the presidency
but that by promoting a product she was also somehow degrading the
dignity of the presidency.
The Melania controversy is nothing new: Eleanor Roosevelt pitched hot dog buns.
The tall, regal first lady was a magnet for marketers — and she
happily signed on. During her years in the White House, she became a
paid pitchwoman for hot dog buns, mattresses and air travel.
Many Americans were aghast at the sight of the president’s wife
lending her name and face to hawk products in commercial advertising;
Congress launched an investigation. But the controversy died down when
Eleanor Roosevelt disclosed that she had donated most of her earnings