Protect fragile items with biodegradable foam packing in a flight checked luggage

Someone is planning to bring fragile items (eg. glass bottle, steel bar, lamp, or electronics without Lithium battery) in a flight checked luggage.
That person tries to protect those fragile items with biodegradable foam peanuts put them together inside the suitcase.
Which one is better: to spread those foams within the suitcase or to contain the foams into several transparent plastic bags before putting it into the suitcase?
This question emerge to overcome some cases when the airport security officers want to open the suitcase and do checking.
Thank you
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Can you check a fragile box on a plane?
FRAGILE ITEMS These items may not be transported in checked baggage. Fragile items that meet all the requirements are allowed as carry-on or checked baggage may still require a Limited Liability Waiver.How do you fly with fragile things?
When it comes to packing fragile items:What should I not put in my checked luggage?
Packing Basics: Never Put These 14 Things in Your Checked BagHow do you travel with glass?
Roll the bottle in a large, soft garment or cloth, such as a towel, sweater, or pair of pajama pants. When you pack the bottle, place it in the center of your suitcase, so that the bottle is cushioned by clothing on all sides.How To Safely Pack and Ship a Fragile Item
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