Roger Yang Profile picture
Chief Taste Tester - Avelo Restaurant, and Bar Avelo
Feb 28, 2022 4 tweets 2 min read
Comparison of air filtration/ventilation at a restaurant table.

Smoke machine flicked on every 15 seconds, video sped up 10x. With ventilation, smoke is continuously cleaned. Without, it builds up.

In an unventilated space, you're breathing exhaled air from other people. Same video, showing the other half. 7' acrylic wall separating tables, HEPA air purifiers on both sides of the wall.

With one "puff," a particle counter maxed at 999. At the other table, it read between 25-75 (HEPA on), so I'm confident that very little exhaled air is shared..
Dec 20, 2021 9 tweets 2 min read
**Covid+ guest dined at our restaurant** (Osteria Du - we just opened). Got a voicemail from them on Sunday, the day after we announced closing our dining rooms. They had dined with us on Thursday, but didn't know that they had been exposed until Friday.

We immediately did ... rapid tests for service staff, and they were negative. We tested again today, just to be more certain. It is not possible to get PCR tests done in a timely manner right now.

We also called the guests who were at a nearby table, and they reported no symptoms and were planning ..