This is 99% invisible. I'm Roman Mars.

Since the early 1500s, when Sir Thomas Moore coined the word utopia,

and probably well before then, people have been thinking about how to design their ideal society.

Maybe it's one that doesn't use money, or one that drops the traditional family structure in favor of raising children collectively.

One, two, check.

That's producer Delaney Hall, getting ready to visit a sort of utopia.

And before she left, she packed her bag, tested her recording equipment, grabbed a few extra packs of AA batteries, and...

I'm just gonna fill up this tub of water.

And then thoroughly washed every item of clothing that she was bringing with her.

I have a box of baking soda, just dumping some of it in this tub of water.

To be more specific, I soaked my clothes in a tub of baking soda for 48 hours,

and showered with Dr. Bronner's unscented soap for two weeks before I left.

I got an old pair of jeans, I'm putting them into you.

Delaney reports for the show, state of the reunion.

Every episode is about a different place, so she travels a lot.

But she doesn't usually go to these kinds of extremes to get ready.

But this is an unusual reporting trip I'm about to go on.

I'm headed to an isolated community in eastern Arizona, on the outskirts of a small town called Snowflake.

And the people who live there have given me very special instructions for how to get ready.

Because for some people in Snowflake, utopia just means not being physically sick.

A community of people who live just outside this small rural town,

have a medical condition called MCS, multiple chemical sensitivity.

...