Would flash paper be detected by dogs or other sniffers if carried onto an airplane? Or if packed in luggage? Wet?

Just curious if guncotton is a detectable explosive.

No, I am not trying to blow up an airliner with flash paper. Nor do I want to get arrested.

And in any case, I will leave it at home when traveling by air.

I have carried it in both checked and carryon. If it's wet you are more safe obviously. I don't think they are looking for nitrocellulose in particular.

Having said that you never know.

Nitrocellulose or white smokeless powder is the propellant in in hand gun bullets. They might be on the look it for it, you never know.

I wouldn’t risk it. Lol

Flashpaper is nitrocellulosis. It is higly flammable and an explosive. In many countries the laws concerning explosives are applicable.
It should never be transported on a plane- not in the luggage and not in the cabin. Ask your dealer to deliver the amount needed directly to the venue before you travel there. Remind the dealer to deliver the material in wet condition. Ask the hotel or theatre to store the parcel in a safe. You should know how to dry nitrocellulosis correctly. You need a room without flammable material and while drying the nitrocellulosis must be monitored all the time. There is a trick how to dry it fast and safe. Professional pyrotechnicians are educated how to do it. Sadly many magical suppliers are not used to label it properly with GHS signs and to add documents with CAS-number.