Got the squitters real bad on that Peking jaunt.
If you're measuring it by controllables, I was on about a a ten-second alert.Spent the flight back sat near the sheissenhausen ready to dump.
Barium solutions for endoscopic purposes have a similar effect albeit more benign.
Peking itself was a humid overcast dump with
Tenamen Square overzealously policed by plain clothes OB.
Unforgettable night at Danger Doyle's by the stadium with Duffen, PB , Simon Maltby and co. culminating in the local bamboo curtain twitchers calling in the Peking Plod to quieten the row. No chance.

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