The scents can be sent via email, tweet, or text, researchers said.
Serena Williams did not need the help of a fan-filled Arthur Ashe Stadium to provide a lift during her 7-5, 6-4 win over the 96th ranked Kristie Ahn.
The US Open women's semi-finals scheduled for Thursday evening have been postponed due to the threat of rain.
Images from Day 1 of the US Open in New York, on Monday.
The 71st Emmy Awards have been announced, and there have been quite a few surprises and some expected nods.
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