Prepaid Expenses (Narrative) (Details) - CAD ($)	Jan. 31, 2022	Jan. 31, 2021
Disclosure of detailed information about intangible assets [line items]
Prepaid expenses	$ 49,295	$ 155,442
Study on detection technology [Member]
Disclosure of detailed information about intangible assets [line items]
Prepaid expenses	$ 0	$ 70,060

The amount recognised as a current asset for expenditures made prior to the period when the economic benefit will be realised.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2021-03-24

Name:	ifrs-full_CurrentPrepaidExpenses
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant