I was in Havana in January, 2017, around the time that this was happening. I walked around the US embassy one day. The weather was sunny but cold and windy; the embassy is on the Malecón, the seafront that stretches around Havana, and waves were crashing over the walls. It was unpleasant. I had never heard of the "Havana Syndrome" thing then, but in describing that day in my notes, I wrote that there was a feeling of pressure from the wind and sea spray. In hindsight, I wonder if this sort of weather condition contributed to perceptions of this syndrome. In videos I took that day you can sense this from the wind noise.